Figure 3. Three phase power has three identical sine waves overlapping at an offset of 2π/3 radians or 120°. When one phase reaches an x-intercept or node the next phase is only 30° and approximately 5.6 milliseconds from reaching its crest.
Vertical Lathe
Model 411 Horizontal Split Case
Horizontal Lathe
Bowl wear ring
Figure 2. A simple sine wave with a period of 360° and an amplitude of 1. In single phase power the x-intercepts are 180° from each other. A full period is 360°. A single phase motor has a crest approximately every 16.5 milliseconds giving the motors a tendency to vibrate more, which may contribute to a shortened bearing life.
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
National Pump Vertical Turbine Pumps, API 610
Nickerson Field Crew
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Custom shapes cut from raw materials.
Horizontal Lathe
Submersible Turbine Pumps
Computer Numerical Control Machine (CNC) at Nickerson
Vertical Lathe
Super T Series® Engine Driven
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Bowl wear ring
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
SF Series®
Model 342A Single Stage End Suction
Impeller wear ring
380 Series Vertical Inline Pump with VFD
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Figure 1. The general arrangement of a three phase waveform.
Schlumberger Pump Assembly
Utah Lake Cascade Pump
Computer Numerical Control Machine (CNC) at Nickerson
